inconclusivener48 - Blog
Sept
12
2015

EVA Solar Cell Encapsulation Film Production Line

Solar EVA and Cell Encapsulation Film

Green energy is the most talked-about topic at present. Undoubtedly, solar energy becomes an outstanding one of these. Global solar energy products has developed by over than 45% yearly before decade. The development and investment of solar technology of China exceeded the world average.

Solar module is laminated by steel glass--EVA film--semiconductor wafer--EVA film- backsheet as it shown in figure "Schematic of Solar Cell Encapsulation". Cross-linking and treating will take place as the amalgamated structure will be heating system and pressing. The cured security layers can prevent solar modules from harsh environment harm while keeping high light transmittance.

Twin screw extrusion system

Twin screw extruder direct extrusion technology is one the most important characteristics of this relative line. The successful work of twin screw extruder makes EVA resin and lots of additives in-line compounding a reality. This meaningful improvement is a result of our deep knowledge of twin screw extruder and wealthy methods. This invention is more than technical advantages, but reducing working costs substantially.

The wonderful mixing aftereffect of twin screw extruder is playing a leading role in EVA film production, because it involves a great number of additives, and it needs good compounding. Unique screw screw and elements profile are designed according to the physical and chemical nature of EVA resin. It keeps each ingredient combining while avoiding pre-crosslinking homogeneously. It is a basis of high efficiency as well.

Special cooling channel of calenders retains the temperature of calendar surface homogeneous. Peculiar silicon coated calendar can remove the stress of EVA film effectively so that lower the shrinkage rate significantly.

German-made gear pump ensures melt entering into T-die with constant quantity and stable pressure. The close-loop can keep the machine stable operating intelligently.

Higher Productivity, Lower Shrinkage

This is one of the givens which guarantee the lower shrinkage and high light transmittance.

Full automated in-line thickness tester log and survey the thickness with time. The full automated constant pressure winding system was created refer to the mechanical character of EVA film. Less margin waste materials, Higher level of finished products stem from constant optimizing of every device during long-term practice of production. These optimizations help reducing working cost substantially.

Intelligent Control System

From relay to industry computer, we have more options available. The logic placing between each practical modules makes specific control simple. Safer creation is a result of considered mechanised and electrical safety. The complete sync and synergetic control of each unit assured the high quality final product relaxed.

Excellent Quality of EVA Film

The quest for each detail leads to a worldwide top notch EVA solar cell encapsulation film. We can guarantee the shrinkage significantly less than 3%, and the relative line rate reach at 5m/min.

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